Teach Yourself Electricity and Electronics Examination Part 4

Multiple choice questions in Teach Yourself Electricity and Electronics Examination Part 4

This is the Part 4 Examination Test (Advanced Electronics and Related Technology) that includes the last 4 Chapters of the book Teach Yourself Electricity and Electronics, 5th edition by Stan Gibilisco. If you are looking for a reviewer in Electronics Engineering this will definitely help you before taking the Board Exam.

Topics Included in the Test from Chapter 31 to Chapter 34

Part 4: Advanced Electronics and Related Technology

Start Practice Exam Test Questions

1. A machine vision system that uses two cameras to allow a robot to sense depth is:

  • A. Binaural.
  • B. Binocular.
  • C. Monaural.
  • D. Monocular.
  • E. High resolution.

2. A VU meter contains a scale that measures relative:

  • A. Decibels.
  • B. Current.
  • C. Voltage.
  • D. Power.
  • E. Frequency.

3. A fleet of insect robots generally has:

  • A. Low individual intelligence but high group intelligence.
  • B. High individual intelligence but low group intelligence.
  • C. Low individual intelligence and low group intelligence.
  • D. High individual intelligence and high group intelligence.
  • E. None of the above.

4. When two or more audio sources drive a single amplifier, it is good engineering practice to use:

  • A. A synthesizer.
  • B. An audio-frequency choke.
  • C. An audio mixer.
  • D. A graphic equalizer.
  • E. A phase control.

5. The use of a stereo headset to listen to music while driving:

  • A. Is good because it keeps passengers from distracting the driver.
  • B. Is dangerous.
  • C. Keeps the driver’s mind on the road.
  • D. Is good because it prevents road rage.
  • E. Is better than using car speakers.

6. A quantitative measure of the ability of a machine vision system to detect dim light is its:

  • A. Selectivity.
  • B. Resolution.
  • C. Sensitivity.
  • D. Field of view.
  • E. Amplitude ratio.

7. The pitch of an audio sine-wave tone depends on:

  • A. The amplitude of the disturbance.
  • B. The frequency of the disturbance.
  • C. The polarization of the disturbance.
  • D. The medium through which the sound travels.
  • E. The waveform of the disturbance.

8. Three-dimensional range plotting is generally done in:

  • A. Linear coordinates.
  • B. Rectangular coordinates.
  • C. Polar coordinates.
  • D. Celestial coordinates.
  • E. Spherical coordinates.

9. A form of communications in which either party can “hear” while “talking,” thus allowing one party to instantly interrupt the other at any time, is called:

  • A. Half simplex.
  • B. Full simplex.
  • C. Half duplex.
  • D. Full duplex.
  • E. Nothing. There is no such mode of communications.

10. Which of the following is an example of wireless technology?

  • A. The Global Positioning System.
  • B. A field-effect transistor.
  • C. A junction diode.
  • D. A carbon-composition resistor.
  • E. Digital-to-analog conversion.

11. A satellite in a LEO system is usually:

  • A. At an altitude of 22,300 miles.
  • B. Geosynchronous.
  • C. In a retrograde orbit.
  • D. In a polar orbit.
  • E. Midway between the earth and the moon.

12. Which consideration is the most important in a hi-fi audio amplifier?

  • A. Power output.
  • B. Efficiency.
  • C. Linearity.
  • D. Input impedance.
  • E. Output impedance.

13. The microprocessor in a computer is part of the:

  • A. Random-access memory.
  • B. Central processing unit.
  • C. Read-only memory.
  • D. Hard drive.
  • E. Internet controller.

14. An RF transducer is:

  • A. Sensitive only within the range of human hearing.
  • B. Sensitive only to visible light.
  • C. An antenna.
  • D. An analog-to-digital converter.
  • E. A digital-to-analog converter.

15. Vacuum tubes might be found in:

  • A. A portable headset tape player.
  • B. The amplifier used by a band at a rock concert.
  • C. A meter for measuring sound intensity.
  • D. A robot controller.
  • E. A GPS receiver.

16. One kilobyte is the same amount of data as:

  • A. 1024 bits.
  • B. 1024 kilobits.
  • C. 1024 megabits.
  • D. 1024 gigabits.
  • E. None of the above.

17. Hexaphonic sound is not common, but if it were, it would most likely be used for:

  • A. True three-dimensional hi-fi audio reproduction.
  • B. Two-way radio communications.
  • C. Ensuring that an AM/FM tuner can receive at least six stations.
  • D. Improving the dynamic range of a speaker system.
  • E. Robot control.

18. Range sensing and range plotting are basically the same thing except for the:

  • A. Light-detecting sensitivity.
  • B. Image resolution.
  • C. Selectivity.
  • D. Wavelength at which the system functions.
  • E. Number of dimensions involved.

19. In a component-type hi-fi system, cables connecting the various units should be:

  • A. As long as possible.
  • B. Single-conductor only.
  • C. Connected in parallel.
  • D. Shielded whenever possible.
  • E. Connected in series.

20. A radio antenna receives 50 watts of RF power from a transmitter, and radiates 49 watts of that power into space. Which of the following statements is true?

  • A. The antenna is 98 percent efficient.
  • B. The loss resistance is 1 ohm.
  • C. The loss resistance is 1 percent.
  • D. The ground loss is 1 watt.
  • E. The antenna feed line loss is 1 watt.

21. The technical expression for robot-arm joint flexibility is:

A. The antenna is 98 percent efficient.

  • A. Degrees of rotation.
  • B. Radians of rotation.
  • C. Degrees of flexibility.
  • D. Manipulator flexibility.
  • E. The work envelope.

22. In an Internet connection, the receiving computer is also known as the:

  • A. Server.
  • B. Host.
  • C. Peer.
  • D. Node.
  • E. Destination.

23. The term refresh rate refers to:

  • A. The number of times per second that an image is renewed in a computer display.
  • B. The number of times per second that a computer memory contents change.
  • C. The speed at which files on a hard drive are overwritten.
  • D. The number of bits per second transferred in an Internet connection.
  • E. The time it takes to recharge a nickel-cadmium electrochemical cell.

24. The “brain” of a computer is the:

  • A. Hard drive.
  • B. Controller.
  • C. Microprocessor.
  • D. CD-ROM.
  • E. Monitor.

25. On a computer hard drive, the circular tracks are broken into arcs called:

  • A. Clusters.
  • B. Bytes.
  • C. Sectors.
  • D. Divisions.
  • E. Storage units.

26. A robot arm moves in three dimensions according to a polar coordinate scheme with a linear elevation dimension added. This is called:

  • A. Spherical coordinate geometry.
  • B. Rectangular coordinate geometry.
  • C. Cartesian coordinate geometry.
  • D. Concentric coordinate geometry.
  • E. Cylindrical coordinate geometry.

27. In a volatile memory chip:

  • A. The stored data is retained even when power is removed.
  • B. The stored data vanishes when power is removed.
  • C. The stored data capacity is greater than that of a hard drive.
  • D. The stored data capacity declines with the passage of time.
  • E. The reliability has deteriorated and the chip should be replaced.

28. At low volume levels in an audio amplifier system, the dynamic range is limited primarily by the:

  • A. Input impedance.
  • B. Efficiency.
  • C. Input power.
  • D. Noise level.
  • E. Frequency.

29. In a wireless system, noise always:

  • A. Improves the bandwidth.
  • B. Increases data transfer rate.
  • C. Reduces the transmitted signal power.
  • D. Degrades performance.
  • E. Makes communication or data transfer impossible.

30. The noise level in a wireless receiver can be reduced using:

  • A. A more powerful final amplifier.
  • B. A grounded-grid configuration.
  • C. Cryotechnology.
  • D. The Global Positioning System.
  • E. A large antenna.

31. Image resolution is an important specification in:

  • A. Oscillators.
  • B. Computer monitors.
  • C. Receiver sensitivity.
  • D. Rectifier diodes.
  • E. Superheterodyne receivers.

32. According to Asimov’s laws, a robot must obey all orders from humans:

  • A. No matter what.
  • B. As long as nobody gets hurt or killed as a result.
  • C. As long as the power is on.
  • D. Unless its controller is infected with a computer virus.
  • E. As long as it does not cause the robot controller to crash.

33. The use of a cell phone is prohibited in a commercial aircraft in flight because:

  • A. It can annoy other passengers.
  • B. It can interfere with other people’s cell phones.
  • C. The interior of the aircraft produces a dangerous RF resonant cavity.
  • D. It won’t work anyhow.
  • E. It can interfere with flight instruments and communications.

34. A satellite can remain over the same spot on the earth’s surface at all times:

  • A. Only if it orbits at an altitude of 22,300 miles.
  • B. Only if it is a member of a LEO fleet.
  • C. Only if its orbit is retrograde.
  • D. Only if its orbit is polar.
  • E. Never. An orbiting satellite always moves relative to the earth’s surface.

35. Signal-plus-noise-to-noise ratio (S + N/N) is often specified when stating a receiver’s:

  • A. Selectivity.
  • B. Stability.
  • C. Modulation coefficient.
  • D. Sensitivity.
  • E. Polarization.

36. A platter is a part of a device known as:

  • A. A videotape recorder.
  • B. A ceramic filter.
  • C. Tape memory.
  • D. A hard drive.
  • E. A voltage-controlled oscillator.

37. Which type of modulation consists of one voice sideband, with a suppressed carrier?

  • A. AM.
  • B. SSB.
  • C. FM.
  • D. RTTY.
  • E. PCM.

38. In a machine vision system, enhanced sensitivity often involves a sacrifice in the:

  • A. Image resolution.
  • B. Memory capacity.
  • C. Data speed.
  • D. Short-wavelength response.
  • E. Long-wavelength response.

39. A machine hearing system can best identify the sort of device or object producing a sound by analyzing the:

  • A. Distance to the sound source.
  • B. Direction from which the sound is coming.
  • C. Duration of the sound.
  • D. Number of sources from which the sound is coming.
  • E. Waveform of the sound.

40. A ratio detector is a circuit for demodulating:

  • A. AM.
  • B. HM.
  • C. FM.
  • D. SSB.
  • E. AFSK.

41. A belt drive might be found in a:

  • A. Synthesized AM/FM tuner.
  • B. Robotic vision system.
  • C. CD player.
  • D. Graphic equalizer.
  • E. Turntable.

42. A robot can be considered autonomous if:

  • A. It is self-contained.
  • B. It has its own computer system.
  • C. It does not rely on a central computer to receive its commands.
  • D. Conditions A, B, and C are all true.
  • E. Any one of conditions A, B, or C is true.

43. Sound waves in air consist of:

  • A. Fluctuating magnetic fields.
  • B. Fluctuating electric fields.
  • C. Fluctuating electric and magnetic fields.
  • D. Vibrating electron orbits.
  • E. Vibrating molecules.

44. An AM/FM hi-fi tuner that derives its frequency from a quartz crystal and phase-locking circuits is said to be:

  • A. Broadband.
  • B. Synthesized.
  • C. Phased.
  • D. Modulated.
  • E. Analog.

45. Epipolar navigation is a means by which a machine can locate objects and plot a course in:

  • A. The total darkness of the deep ocean.
  • B. A straight line.
  • C. Three-dimensional space.
  • D. A circular path.
  • E. The north and south polar regions only.

46. The term robot generation refers to:

  • A. The time period in which a particular type of robot was developed.
  • B. A robot-controlled electric power plant.
  • C. The manufacture of robots by other robots.
  • D. The manufacture of robots by human beings.
  • E. The number of times a robot has copied itself.

47. Which word best completes the following sentence? “The human ear/brain perceives sound volume according to the _________ of the actual intensity.”

  • A. Sum.
  • B. Product.
  • C. Square.
  • D. Square root.
  • E. Logarithm.

48. Human eyes can see electromagnetic radiation over a wavelength range of approximately:

  • A. 390 to 750 meters.
  • B. 390 to 750 millimeters.
  • C. 390 to 750 micrometers.
  • D. 390 to 750 nanometers.
  • E. 390 to 750 kilometers.

49. The World Wide Web is:

  • A. Part of the Internet.
  • B. A company that manufactures communications equipment.
  • C. An agreement between nations concerning data protocols.
  • D. Another name for the Global Positioning System.
  • E. A satellite television network.

50. Synchronizing pulses in a video signal:

  • A. Keep the brightness constant.
  • B. Keep the contrast constant.
  • C. Keep the image from rolling.
  • D. Ensure that the colors are right.
  • E. Keep the image in good focus.

Complete List of Multiple Choice Questions from this Book

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